baber/WOPTO huggingface dataset:
Patent GB-910386-A (GB)
Title: Educational devices
IPC: G09B23/18
Filed: 1958-11-21
Abstract: 910,386. Educational devices. CROW, L. R. Nov. 21, 1958 [Sept. 25, 1958], No. 37506/58. Class 146 (2). [Also in Group XXXV] A kit for use in teaching electricity and magnetism comprises essentially a yoke member 10 of magnetizable material having slots 10a, 10b therethrough, surrounded by a recess 10c so that one or more core members 12-14 may be attached as by screws 10d. As shown in Fig. 1, a transformer may be made up and demonstrated, an upper member 15 being held in place by U-clamps 23 and coils 20-22 being fitted over the cores 12-14. Suitably connected, this arrangement may be used to demonstrate a saturable core reactor. Other arrangements of parts are illustrated whereby inductance, electric generators, electromagnets and electromagnetic lines of force may be demonstrated.
Patent GB-1521914-A (GB)
Title: Plotting apparatus
IPC: G01J3/02
Filed: 1975-09-12
Abstract: 1521914 Correcting plotting apparatus PERKIN-ELMER Ltd 8 Dec 1976 [12 Sept 1975] 37509/75 Heading G1A In apparatus for plotting or otherwise displaying values of a dependent variable in correspondence with values of an independent variable, of the kind wherein means providing a signal representing the dependent variable introduces a delay, phase tracking means are provided to produce an output quantity representing the delay, and means are provided responsive to the tracking means to produce a compensating shift in the generation of the dependent variable or in the plotting of the independent variable. In a spectrophotometer wherein a filter timeconstant selector 38 controls the duration of a measurement signal delay equivalent to a wavenumber increment determined by the setting of a scan speed selector 26, switches 8-18 selectively control the position of a cam 23 which via a follower 44 and a differential mechanism 45 (and Fig. 3 (not shown)), determine by how much a grating cam 42 advances the selected wave-number in relation to the chart drive mechanism of a pen recorder. In another embodiment Fig. 4 (not shown) electrical logic means are used to advance a wavenumber stepper motor (83) a selected number of steps in relation to a chart stepper motor at the beginning of a scan.
Patent GB-935687-A (GB)
Title: Improvements in or relating to briquetting
Inventor: GREGORY HARRY REX
IPC: C10L5/02
Filed: 1958-11-21
Abstract: The invention of the parent Specification, which is a method of making a briquette wherein a mass of particles under pressure is caused to undergo angular shear strain so directed as to increase the strength of the briquette, is modified by heating the particles at a temperature within the range 400 DEG C. 600 DEG C. during the application of the pressure, the material of the particles being coal.  The heating may be done in a neutral, reducing or oxidising atmosphere, for which purpose the particles may be introduced into a fluidised bed of coal particles at the desired temperature.
Patent GB-352886-A (GB)
Title: Cleaning apparatus for the discs of centrifugal bowls
IPC: B04B15/06
Filed: 1930-12-12
Abstract: 352,886. Centrifugal machines. AKTIEBOLAGET SEPARATOR, 8, Fleminggatan, Stockholm. Dec. 12,.1930, No. 37577. Convention date, Dec. 20, 1929. [Class 23.] Cleaning parts.-The liner discs of centrifugal bowls are cleaned by two elements having the same shape as the discs and carrying brushes or pads; the two elements are rotated continuously in opposite directions. The element 1 is rigidly attached to the sleeve 2 on the hollow shaft 3, and has brushes on its inner surface. The second element 5 has brushes on its outer surface and is carried by a spindle 6 which is supported in the bushing 10 in the lid 14 of the apparatus. The lid is movable about a pivot pin 15 and is normally held in the position shown in dotted lines by a spring 16. The elements 1, 5 are constantly rotated by the motor 17 by means of an endless rope which passes over guide-pulleys and over the pulleys 4, 7. The lid 14 is connected by a rope 22 to the pedal 24. While the elements are rotating, a disc 27 is put into the element 1, for instance by means of tongs which hold it by its outer flange. The pedal 24 is then pressed and the element 5 is brought to the inside of the disc so that the disc is brushed on both sides. Gas or liquid to assist in the disc cleaning process can be supplied through the hollow shaft 3 and the openings 26 in the nozzle 25. The cleaning substance and the impurities are collected by the casing 11 and are discharged therefrom by the opening 13.
Patent GB-981207-A (GB)
Title: Electric lamps having a parabolic reflector and an incandescent filament for long-distance and short-distance lighting
IPC: H01K9/08
Filed: 1962-10-04
Abstract: 981,207. Vehicle headlamps. R. MICKLEY. Oct. 4, 1962 [Oct. 9, 1961], No. 37585/62. Heading H1F. An electric lamp comprises a parabolic reflector, a filament extending in the horizontal plane containing the optical axis of the reflector from a point in front of the focal point to a point to the rear thereof or extending transversely through the focal point and an upper screen having a first portion extending above the filament in a plane parallel to the horizontal plane containing the optical axis from a point to the rear of the filament up to but not beyond the focal plane and a second portion between the apex of the reflector and the filament extending from the first portion to but not beyond the horizontal plane containing the optical axis. A second screen may be arranged below the filament having a first portion parallel to the horizontal plane containing the optical axis and extending from a point in front of the filament up to but not beyond the focal plane and a second portion in front of the filament extending from the first portion to but not beyond the horizontal plane containing the optical axis. Either screen may extend more on one side of the optical axis than on the other side which is directed towards the oncoming traffic. The screens may be mirror coated internally and dulled externally. The filament may be stirrup-shaped with the open end towards the apex of the reflector, a straight filament for the short-distance light being arranged between the arms of the stirrup. Alternatively, a straight filament for longdistance light may be used, two filaments for short-distance light being arranged one on each side of this. The long-distance filament may also be arranged transversely through the focal point, the filament for the short-distance light being arranged behind the focal point and below the plane of the first filament. Fig. 1 shows the effect of the screening, light from the filament 2 being prevented by the screens 5, 6 from reaching the areas 10, 19 of the reflector. Figs. 4 and 5 show a stirrup shaped main filament 3, a short-range filament 9 and upper and lower screens 6, 5, respectively, viewed from above and below, the lower screen 5 extending more on the side of the optical axis 1 remote from the traffic.
Patent GB-1079102-A (GB)
Title: Improvements in or relating to sterol esters
Inventor: NELSON RICHARD JOHN
IPC: A61K47/32
Filed: 1964-09-15
Abstract: A water-soluble partial ester of (a) a water-soluble oxyalkylated sterol and (b) a copolymer of an a ,b -unsaturated carboxylic anhydride with an ethylenically unsaturated monomer, containing not more than 25% of the carboxyl groups present as ester groups of the sterol is claimed.  The copolymer may be derived from (i) an anhydride which is maleic, chloroitaconic, maleic, citraconic, methylene malonic, or benzyl maleic, and (ii) methyl ethyl or isobutyl vinyl ether, ethylene, styrene, vinyl acetate, chloride or stearate, methyl acrylate, acrylonitrile or N-vinyl pyrrolidone.  The sterol may be cholesterol, lanolin, cholestanol, stigmasterol, b -or g -sitosterol or lathosterol and is oxyalkylated by condensing with e.g. ethylene, propylene or butylene oxide.  The partial ester may be neutralized with sodium hydroxide or an amine.  Compositions may contain an aqueous solution of the partial ester and polyvinylpyrrolidone or mineral oil and sodium hydroxide. These compositions may be used as a hair pomade and hand lotion respectively.ALSO:A hair pomade in the form of a clear gel comprises an aqueous solution of (i) the partial ester of the condensation product of lanolin with ethylene oxide and a copolymer of vinyl methyl ether and maleic anhydride, (ii) and polyvinylpyrrolidone; the pH of the solution being adjusted to 5 with aqueous sodium hydroxide. A hand lotion comprises in the form of a creamy gel comprises a mixture of an aqueous solution of (i) above and mineral oil which has been neutralised to a pH of 6 with aqueous sodium hydroxide.
Patent GB-1133058-A (GB)
Title: A device and a process for the production of building materials, in particular road-making aggregates, from dry boiler furnace ashes
IPC: C04B18/08
Filed: 1967-08-16
Abstract: 1133058 Sintering hoods; preventing corrosion BERGWERKSVERBAND GmbH 16 Aug 1967 [26 Aug 1966] 37672/67 Headings C5G and G10A Road-making aggregates are produced from separated dry boiler-furnace ashes in a continuous sintering furnace, the fire-box discharge cone 1 of the boiler 2 serving as the ignition hood for the conveyer 4 of the sintering furnace. Before passing under the ignition hood, the conveyer is covered with a layer of return feed R from supply means 7, and a layer of flyash pellets P from a pelletizer (not shown) through supply shoot 5. An upper layer of firebox ashes FA is fed through the discharge cone 1. Finely divided dolomite may be injected into the furnace gases, both to act as a desulphurizer, and to improve the quality of the sintered product.
Patent GB-1386038-A (GB)
Title: Thiazolopyrimidine derivatives and pharmaceutical compositions containing them
IPC: C07D495/20
Filed: 1973-08-08
Abstract: 1386038 Thiazolepyrimidine derivatives and pharmaceutical compositions containing them LIPHA LYONNAISE INDUSTRIELLE PHARMACEUTIQUE 8 Aug 1973 [9 Aug 1972] 37672/73 Heading C2C The invention comprises heterocyclic compounds in salt form represented by formula and the corresponding bases thereof, wherein R is a C 4-8  alkyl group or a benzyl radical; R 1  is a hydroxy radical or a double bond in the 3,2- positions of the thiazolpyrimidine nucleus; R 2  is an aromatic radical selected from a phenyl radical optionally substituted by at least one halogen atom or alkoxy radical, a 2-naphthyl radical and a 5,6,7,8-tetrahydro-2-naphthyl radical; and X is a halogen atom or a pharmaceutically acceptable acid radical. The compounds of Formula I in which R 1  is a hydroxy radical may be prepared by treating an α- halogenated ketone of formula wherein Y is a halogen atom (e.g. Br), and R 2  is the same as defined above, with a compound of formula wherein R and Y have the same meanings as defined above, at a temperature of from ambient temperature to 50 C., in an inert solvent. When the reaction is carried out at 125 to 160 C, the compounds of Formula I, in which R 1  represents a double bond at 3,2-positions of the thiazolpyrimidine nucleus, are formed. The intermediate compounds of Formula II may be prepared by reacting a compound of formula wherein R has the same meaning as defined above, with CS 2 , and treating the product with a halo-acid to obtain a compound of Formula II. The compounds of Formula III may be obtained by the reduction of dinitriles of formula wherein R has the same meaning as defined above. The dinitriles of Formula IV may be prepared by the condensation of a chlorinated base of formula or an acid addition salt thereof, wherein R has the same meaning as given above, with a malonitrile in the presence of an acid acceptor, e.g. an alkali metal carbonate, and in an aprotic solvent. The invention also comprises a pharmaceutical composition, having utility as thymo-analeptic and platelet-anti-aggregant, containing as an active ingredient a compound according to the invention in association with a pharmaceutical carrier or excipient therefor.
Patent GB-852929-A (GB)
Title: Method of purifying solid high molecular weight polymers of alpha-olefins
IPC: C08F6/00
Filed: 1958-11-24
Abstract: Crude alpha-olefin polymers containing a major proportion of a highly crystallisable isotactic polymer and a minor proportion of non-crystallisable polymer and inorganic impurities are purified by subjecting the crude polymer to the action of an organic solvent capable of swelling the crystallisable polymer and dissolving the non-crystallisable polymer, and a mineral acid capable of dissolving inorganic impurities, removing the liquid phase containing dissolved impurities, and subsequently washing to remove the mineral acid.  The polymer may be subjected to the action of the organic solvent and mineral acid at a temperature near to the boiling point of the solvent.  The acid may be neutralized by bubbling gaseous ammonia into the suspension of polymer in organic solvent and acid.  The polymers specified are polypropylene, polybutene, and polystyrene. The preferred organic solvents are chlorinated e.g. trichloroethylene, chloroform, methylene chloride, or carbon tetrachloride.  The acid may be nitric or hydrochloric acid and the latter may be used as a gas. The inorganic impurities may be those arising from the catalyst, e.g. triethyl aluminium and titanium trichloride.
Patent GB-322908-A (GB)
Title: Improvements in grabs
IPC: B66C3/06
Filed: 1928-12-21
Abstract: 32,2,908. Page, M. W. Flood-, and Westwood & Co., Ltd., J. Dec. 21, 1928. Grab - buckets. - Relates to grabs of the kind in which the buckets are released by turning a horizontal pin 19 which normally locks a vertical pin 18 on the lower cross-head 2 to a collar 17 on the lower sheave-block 15. Instead of releasing the pin 19 by means of a suspended ring, or by means of a weighted lever which operates only on lowering the buckets to the ground, the releasing means is made operable manually at any time and operates also automatically when the grab rests upon the ground. As shown, the lower cross-head 2 and sheaveblock 15 are guided by the telescopic rods 4, 3. A weighted lever 22 on the pin 19 tends to move the pin to the releasing position, Fig. 6, but a weighted trigger 26 pivoted freely on the pin normally takes up a vertical position so that a pin 25 thereon engages a lug 24 on the lever 22 and holds the pin 19 in the locking position. If the open buckets rest upon the ground and the block 15 is lowered from the position shown, the trigger 26 moves away from the stop 27 on the upper block 14 and stands vertically against a stop 29, so that when the collar 17 passes over the pin 18 the locking pin 19 snaps into the recess 20. When the block 15 is raised to close the grab, the trigger 26 bears against the stop 27 as shown, but the pin 19 is held frictionally in the locking position with the lever 22 horizontal. The pin is released either by lowering the closed grab on to the ground so as to leave the hoisting rope slack with the pin free to turn under the weight of the lever 22, or by pulling on the hand-line 28 so that the pin 25 on the trigger strikes a blow on the end 23 of the lever 22 to dislodge the pin whilst the grab is suspended. The lever 22 may be spring-actuated.
Patent GB-1395937-A (GB)
Title: Steplessly variable hydrostatic transmission
IPC: F16H39/16
Filed: 1972-08-16
Abstract: 1395937 Reciprocating pumps and motors ROBERT BOSCH GmbH 16 Aug 1972 [18 Aug 1971] 38196/72 Heading F1A [Also in Division F2] A hydrostatic transmission unit comprises a radial piston pump having a rotatable cylinder block 19, axial pistons 22 and a cam ring 24 of variable eccentricity, and a radial piston motor having a fixed cylinder block 25, pistons 29 and a rotatable cam ring 31, also of variable eccentricity, the eccentricity of each cam ring being adjustable by a rotatable member 35, axially movable by a control fork 41, which has slots which engage a pin on each cam member 31, 24, to pivot the cam members on axially parallel pivot pins 52, (49) Fig.4 (not shown). The input is by a shaft 13 to the cylinder block 19 and the output is from the cam ring 31 via the adjusting member 35 to an output shaft 17.
Patent GB-305573-A (GB)
Title: Improvements in sets or snaps for pneumatic riveters
IPC: B21J15/36
Filed: 1928-12-28
Abstract: 305,573. Laurent, P. A. Feb. 7, 1928, [Convention date]. Riveting snaps for use with pneumatic riveters are provided with a collar 3 to arrest the rebound of the snap. The collar is of sufficient diameter in relation to its thickness to have sufficient yield to prevent fracture of the shank. The snap is recessed at 2 and a radius is provided at 5. The snap may be formed from nickel steel, nickel-chromium steel, or from nitrogen hardened steel.
Patent GB-1199863-A (GB)
Title: Tetrahydro-Benzdiaz[1,4]Epine Derivatives
IPC: C07D243/16
Filed: 1968-02-05
Abstract: 1,199,863. Benzodiazepine derivatives. F. HOFFMANN-LA ROCHE & CO. A.G. 5 Feb., 1968 [6 Feb., 1967], No. 38509/69. Divided out of 1,199,862. Heading C2C. Compounds of the general formula (A = phenyl, halophenyl, pyridyl ; B = CO, CH 2 ; R, R<SP>1</SP>=halogen, CF 3 , NO 2 ; R<SP>2</SP> = C 1-7  alkyl, C 2-7  alkenyl; R<SP>3</SP> = C 1-7  alkyl; X = arylsulphonyl, C 1-7  alkanesulphonyl; broken lines denote optional substituents) are prepared by reacting a compound of the formula with an arylsulphonyl or alkanesulphonyl halide, optionally followed by introduction of R<SP>2</SP> if not already present.
Patent GB-933910-A (GB)
Title: Improvements in and relating to crystal detector devices
Inventor: SCOTT WILLIAM JOSEPH
IPC: H01L23/488
Filed: 1958-12-02
Abstract: 933,910. Semi-conductor devices. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 1, 1959 [Dec. 2, 1958], No. 38865/58. Class 37. A rectifying crystal CP and cat's-whisker CW are mounted respectively on a terminal extension 2 and a piston PM. Extension 2 is integral with terminal 1 and the piston is soldered at 50 to terminal 5. After the piston has been soldered in position the deformable nature of the solder allows a final adjustment of its position. Both terminals have the same internal diameter so as to form a coaxial line element. Terminal extension 2 is sealed into the hollow member 3 by a seal of glass or ceramic. Fig. 2 shows the detector mounted in a waveguide W by contact fingers CF1, CF2 engaging grooves in the terminals.
Patent GB-1277787-A (GB)
Title: Method for growing tin-doped n-type epitaxial gallium arsenide from the liquid state
Inventor: KINOSHITA JOSHYO
IPC: C30B19/06
Filed: 1969-08-04
Abstract: 1277787 Doped gallium arsenide VARIAN ASSOCIATES 4 Aug 1969 [2 Aug 1968] 38969/68 Heading C1A [Also in Division H1] Tin-doped, N-type, gallium arsenide is grown from the liquid phase as an epitaxial layer on a GaAs substrate, by forming a melt containing gallium, arsenic and tin, the atom fraction of tin in the melt being below 80% and causing this, melt to contact the heated surface of the substrate and then reducing the temperature of the substrate and the melt until the desired epitaxial layer is formed and then removing the excess material of the melt from the layer so formed. The atom fraction of Ga in the melt is preferably greater than 50% and the charge which is heated to form the melt may consist of Ga, gallium arsenide and tin. The charge 4 (Fig. 1) may be heated in a tilted refractory boat 2 which is tilted in the opposite direction to cause the molten charge to flow over the heated substrate 1 held in position by screw 3. The excess charge material may be scraped from the epitaxial layer and the scraped surface contacted with molten tin bromide to facilitate removal of the residual excess tin and gallium, the treated surface being contacted with HCl to complete such removal. The exposed surface of the substrate 1 is preferably a (100) face of the crystal which is doped to an N<SP>+</SP> state when the product of the invention is an N/N<SP>+</SP> junction, the carrier concentration in the epitaxial layer being in the range 10<SP>16</SP> to 10<SP>8</SP> atoms/c.c.
Patent GB-846005-A (GB)
Title: Improvements in xerographic printers
IPC: G03G15/30
Filed: 1956-12-21
Abstract: 846,005. Electrophotographic apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 21, 1956 [Dec. 29, 1955 (2)], No. 39122/56. Class 98(2) [Also in Group XVI] Cards having printed matter to be reproduced are fed past an optical scanning station 39 comprising a scanning slot 227. The source of light for the underside of the cards comprises a mercury arc lamp 237 and elliptical trough reflectors 234, 236 whose centre sections are covered with a diffuse reflecting material and the remaining parts with a specular material. Uniform irradiance is thereby produced. In order to avoid images of perforations in the cards being projected, a light source 233 concentrates light on the top surface of the cards. The optical image of the printed matter is projected through a glass member 228, a pair of mirrors 229, 231, and a glass member 232, on to the photo-conductive insulating layer 124 of a xerographic drum 49. In order that matter on any part of the card may be reproduced on the drum, means is provided for shifting the image both axially and circumferentially of the drum. The axial shifting means comprises a lens 238 movable in the axial direction by a worm drive on a shaft 239 driven by gearing from a manual crank on a shaft 257. For circumferential adjustment, the mirror 231 is slidable along a pair of spaced guide members 246. A hand crank rotates a shaft 248 geared to two threaded rods constituting a worm drive for members 252 having a pin-andslot connection with the mirror frame 254 by studs 253. The mirror is maintained in contact with the guide members by a spring 260. Also having a pin-and-slot connection with the studs 253 are arms 256 pivoted on a shaft 257, in order that movement of the mirror 231 should cause a resulting pivoting of the mirror 229 about the shaft 257 to keep the mirrors in optical alignment. Connected to one of the arms 256 by a pin 265 is a link 258 pivoted by a pin 257a to a link 259 pivoted at its other end to the main side frame. The pin 257a carries a block 264 against which is urged by a spring 263 a member 262 rigid with the mirror frame 261. Thereby as the arms 256 pivot about the shaft 257, the mirror 229 swings by half the amount. In order that the image should be in focus on the drum in all positions of the circumferential adjusting mechanism, the optical distance between the drum and the scanning slot is kept constant by arranging the guide members 246 to define a part of an ellipse whose foci are the shaft 257 and the centre of the drum 49. Specifications 841,764 and 846,141 are referred to.